For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
The current record for holding breath underwater is 8 minutes, 58 seconds. The average person can hold it a lot less. [ Source: http://www.chacha.com/question/how-long-can-an-average-person-hold-their-breath ].More Answers to  How long can an average person hold their breath .ttp://wiki.answers.com/Q/How_long_can_the_average_person_hold_their_breath_under_water. The average person can hold there breath for about 30 to 40 seconds, not that long uh.